HR lady at my job said job jumping is a norm today.
Jumping is to some degree rational.
My father joined US Steel in the 1960’s expecting to be with them until retirement. When they eliminated his job in 1980 he was like a deer in the headlights. Absolutely stunned as to how his loyalty could be discarded in this manner.
Today’s generation has learned better. Employers have no loyalty to you, so don’t have any towards them.